Question about 2004 Ford Super Duty F 550

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P2285 code 6.0 litre ford deisel long cranking before starting after starts runs great but oil pressure gauge drops at idle

Truck has had no problems at all until my employee started truck yesterday morning the temp outside was 13 degrees cold cold to make a long story short he did not let warm up at all just hauled it came back shortly after reduce engine power i pulled codes it had a p2285 and vechile speed senser rear diff code shut truck off and now wont re-start unless crank for a very long time after it starts runs great but oil pressure gauge at idle drops to o until you barely touch throttle then pressure comes back up

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Bad bearings on crank or worn oil pump. Pressure will be up when cold, but will drop when engine warms up. Check for knock in lower end. If so, bad crank bearings.

Posted on Jan 16, 2013

  • performance auto
    performance auto Jan 16, 2013

    no knocking or tapping after finaly starts

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